Dado-cutter.



No. 708,75L j C. H. ARCHER.

DADO CUTTER.

(Application filed Api'. 21, 1902.)

Patented Sept. 9, 1902.

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UNITED STATES P TENT QFFICE.

OAPELLE I-I. ARCHER, OF RICHMOND, VIRGINIA, ASSIGNOR OF ONE-HALF TO II. S. WINSTON, OF RICHMOND, VIRGINIA. I

DADO-CUTTER.

SPECIFICATIONforming part of Letters ags No. 7qs,75 ,uatea September 9, 1902.

Application filed April 21, 1902.

Virginia, have invented certain new and use ful Improvements in Dado-Cutters, of which 1 the following is a specification, reference being had therein to the accompanying'drawings.

This invention relates to a dado-cutte r, and particularly to a structure embodying an adjustable saw or cutter for cutting different widths of grooves by the use of a single circular saw. I v

The invention has for its object to provide a circular saw split at one portion and'hav ing the opposite ends thereof separated and' secured to suitable flanges, While the diametrically opposite point is centered between said flanges. 1

A further object of the invention is to provide for the adjustment of said flanges upon a collar, so that the distance between the separated ends of the saw maybe varied andthe width of cut thereby adjusted.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the forth its merits, what I claim, and desire to seappended claims."

In thewdrawings, Figure l is a perspective of the cutter, and'Fig. 2'an elevation thereof."

Like letters of reference refer to like parts in the figures of the drawings.

The letter A designates a collar, which is" adapted to be secured to the'shaft orjo'urnal of a saw in any desired manner and is provided at opposite sidesof its center with oppositely-threaded faces A, adapted to re-- ceive the flanges B, which are correspondingly threaded. Between these flanges the saw G, forming the cutter, is disposed and comprises a circular or annular saw split or separated at one point and spirally disposed by having the separated ends secured to they Other similar screws B may be disposed at anydesired' point on the flanges to contact witheach otherfor the purpose of retaining the flanges at otherpointsby the contact of the screws with'each other.

It will be seen that by adjusting the flanges B upon the threaded faces A the distance between the separated ends 0 of the saw may be Varied and the cut thereof correspondingly adjusted. ment has been effected the ends of the saw are again secured to the flanges and the opposite sides of the saw centrally clamped between the screws B so that the width of cut is substantially the distance between the flanges. struction a dado-cutter can be formed at much less cost than ordinarilyand can be kept in order at a minimum expense, asit requires only a singlesaw, which can be adjusted more quickly and easily than when two or more are used. It will also be apparent that any desired means may be employed other than that illustrated for supporting and adjusting the saw without departing froin'the spirit of the invention as defined by the appended claims.

' Having'described my invention and set adjustable flanges thereon, a circular saw having its body centrally held by said flanges, andseparated end portions secured to said flanges on opposite sides of the holding-pointof saidbody; substantially as specified.

3. In a dado-cutter, a supporting-collar, a spirally-disposed saw carried on the periphery of said collar, and'means engaging the free ends of the sawto adjustthe same toward and from each other; substantially as specified.

4. In a dado-cutter, a supporting-collar, a

2. In a dado-cutter, asupport provided with 6o 7 When this adjust- It will be seen that with this conspirally-disposed saw carried on the periphery I of said collar, adjustable flanges secured to said collar, and means carried thereby for securing the saw between said flanges; substantially as specified.

5. Inadado-cutter,asupporting-collarhaving oppositely-extending threads upon its periphery,flanges oppositely threaded upon said periphery, and a circular saw disposed centrally between said flanges at one point and havingsupporting ends secured to said flanges gt an opposite point; substantially as speci- 6. Inadado-cutter,asupporting-collarhaving oppositely-extending threads upon its periphery,flanges oppositely threaded upon said periphery, a circular saw disposed centrally between said flanges at one point and having supporting ends secured to said flanges at an opposite point, opposite adj usting-screws carried by said flanges to engage the saw-body located centrally between the same, and securing means passing through said flanges to hold the free ends of the saw in contact there with; substantially as specified.

7. A dado-cutter having a supporting-body, opposite adjustable flanges threaded upon said body, and a saw extending circumferentially thereof and having its free ends secured to said flanges in planes parallel to each other; substantially as specified.

S. Adado-cutterhavingasupporting-body, a saw extending circumferentially thereof having its free ends securedin planes parallel to each other, and holding means for the free ends of said saw adapted to adjust the same toward and from each other; substantially as specified.

In testimony whereof I affix my signature in presence of two Witnesses.

OAPELLE H. ARCHER.

Witnesses:

OHAs. W. SELDEN, N. W. HUBARD. 

